I've had a couple of Amcrest IP3M-941B PTZ cameras for a few years. (Excellent cameras, IMO;I wish they were still available). Because of the great performance of those 2, I bought 2 of the AD410 doorbell cams, expecting similar performance and imaging. After nearly a month with both doorbell cams connected and working, 1 front door, 1 rear, I confess to some disappointment with the AD410s.In our previous house, we had a different doorbell cam, a round one that was a little more expensive than a single AD410, but one whose performance I became accustomed to and by which I measured other doorbell cams.It is/was a wired doorbell cam, pretty comparable to the AD410. While it did detect motion, it did not have a specific IR "night vision" feature; when it detected motion, usually from 16 feet away and often farther, a small LED would light up illuminating the area around the doorway. Because it did not have IR, the image of what was illuminated was in color, sharp and clear. It also seemed that distant images were in sharper focus than I'm seeing with the AD410s. It also had the ability to talk and listen, AND provided for cloud storage without payment of any subscription fee. The biggest complaint I had with it was that it would lose the WiFi connection more often than convenient. (But that may well have been due to a layer of decorative red brick on the exterior of our house).The AD410 has been adequate, but I miss seeing color images, even at night. While I'm not into using/trusting cloud storage, (yet alone paying for it), I do have microSD cards in each of the AD410s. The Amcrest SmartHome app makes it pretty easy to access and play back recordings based on my settings and schedules. No real complaints with the app, though it seems I now must use 2 Amcrest apps: both "View Pro" for my other Amcrest cameras, and "SmartHome" for the AD410 doorbell cams.The IR seems as if it's beam spreads too widely. Our rear one is along side a sliding glass door, and I can't seem to get it angled enough to prevent the IR from reflecting off of the door. (The door is white; perhaps that contributes to the problem). I have a similar problem at the front door, i.e. the reflection of the IR seems problematic. Overall, the night vision images under IR lighting seem totally inadequate. I find myself wondering, sInce the doorbell is wired, isn't there enough power to light an LED to record sharper images in color?Notifications are never "quick enough", (sometimes it seems hard to believe that BT and WiFi travel at the speed of light, regardless of which brand doorbell one uses, and getting to "Live View" still takes longer than most people seem to expect. I never timed the responses, but it seems the AD410s are slower to respond to interaction than the round doorbell I used previously. At the speed of light over such short distances, it doesn't seem unreasonable to expect faster response times all around.Overall, the AD410s are OK, but I don't think I'd buy them again. I still have the round one from our old house and we have 2 other doors that could use doorbells. I way well connect that round one to one of those before long.